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Mechanically reinforced biodegradable nanocomposites. A facile synthesis based on PEGylated silica nanoparticles

Mechanically reinforced biodegradable nanocomposites. A facile synthesis based on PEGylated silica nanoparticles,10.1016/j.polymer.2010.10.042,Polymer

Mechanically reinforced biodegradable nanocomposites. A facile synthesis based on PEGylated silica nanoparticles   (Citations: 3)
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Biodegradable nanocomposites consisting of poly(ɛ-caprolactone) (PCL) reinforced by PEGylated silica (polyethylene-glycol/SiO2) nanoparticles were prepared by a melt-extrusion process. The PEGylated silica nanoparticles were prepared in a facile, one-pot synthesis process. Transmission electron microscopy (TEM) observations of the PEGylated silica nanoparticles inside the PCL matrix indicated that a homogeneous dispersion had been achieved. As a result, the storage modulus (E′) in the rubbery plateau increased significantly with the filler contents at all temperatures studied, at values approximately 45% higher than the neat PCL, at a loading level of only 4wt.%. In comparison, in the absence of polyethylene-glycol (PEG) the silica nanoparticles formed aggregates inside the PCL matrix, and the reinforcement was negligible. The results from X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (FTIR) analyses identified the location of the PEG at the PCL/silica interface.
Journal: Polymer , vol. 51, no. 26, pp. 6132-6139, 2010
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    • ...Graphite oxide 5 , hydroxyapatite nanocrystals 6 , clay 7 , 8 , carbon nanotubes 4 , 9 - 11 , carbon nanofibers (CNFs) 11 , calcium carbonate (CaCO3) 12 , Mg-Al hydrotalcite 13 , attapulgite 14 , silica nanoparticles 15 , cellulose whisker 16 , microfibrillated cellulose 16 etc, have been added to PCL to overcome the property drawbacks by melt-blending and solvent casting...

    Qingsheng Liuet al. Non-isothermal Crystallization Kinetics of Poly(ϵ-caprolactone)/Zinc O...

    • ...[ 4 ] Graphite oxide,[ 5 ] hydroxyapatite nanocrystals,[ 6 ] clay,[ 7 , 8 ] carbon nanotubes,[ 4 , 9 11 ] carbon nanofibers (CNFs),[ 11 ] calcium carbonate (CaCO3),[ 12 ] Mg-Al hydrotalcite,[ 13 ] attapulgite,[ 14 ] silica nanoparticles,[ 15 ] cellulose whisker,[ 16 ] microfibrillated cellulose[ 16 ] etc, have been added to PCL to overcome the property drawbacks by melt-blending and solvent casting...

    Qingsheng Liuet al. Nonisothermal Crystallization Kinetics of Poly(ϵ-caprolactone)/Zinc Ox...

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